Made from PVC, Foamcore, other doodads, energon, and magic.
Built on and off over the course of a year, Starscream is a huge costume about 7.5 ft wide by 7.5 ft high. He's crazy huge and scary to most kids.

Personal Thoughts:

I wish I had more excuses to wear this costume around.
Giving myself an A+ for finishing the damn thing.
Recently featured on ripten.com http://www.ripten.com/2011/07/17/cosplay-spotlight-starscream-transformers-dark-of-the-moon/ and Acp's facebook!